r

Stainless Steel

Tubular Products

DisclaimerThis Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon.

Please note that the Issue date shown below is no guarantee of accuracy or whether the information herein is up to date or is from the most recent references available at that date.

The information provided in this publication has been drawn from various recognised sources, including EN Standards, recognised industry references (printed & online) and manufacturers’ data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources.

Material supplied by the Company may vary significantly from this data, but will conform to all relevant and applicable standards.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied.

Advice given by the Company to any third party is given for that party’s assistance only and without liability on the part of the Company. All transactions are subject to the Company’s current Conditions of Sale. The extent of the Company’s liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.

WeightsAll weights shown in this publication are for guidance only. They are calculated using nominal dimensions and scientifically recognised densities. Please note that in practice, the actual weight can vary significantly from the theoretical weight due to variations in manufacturing tolerances and compositions.

Copyright 2015: All Rights reserved: Aalco Metals Limited. No part of this publication may be reproduced, sorted in a retrieval system or transmitted in any form or by any means, electronic, mechanical, recording or otherwise without the prior written consent of the proprietor.

Aalco is a registered trade mark of Aalco Metals Limited.

Issue No. 2 – Nov 2015

The Company

2

Aalco – delivering customer service and investing in capability:

An inventory that includes aluminium, stainless steel, copper, brass, bronze and nickel alloys in all semi-finished forms

Comprehensive processing services providing items cut and/or finished to customer requirements

Eighteen locations bringing local service to every corner of the UK

Ongoing investment in technology and logistics to ensure on-time delivery

No order is too large or too small and Aalco offers a responsive and competitive service for supplying anything from single item orders to major JIT contracts, tailoring this service to individual needs.

Whatever your requirement, in whatever quantity, your local Aalco service centre is ready and willing to satisfy your needs. For a quotation, for further information, more extensive technical information, advice on product selection or to place an order, please contact your local Aalco service centre or refer to the web site www.aalco.co.uk.

ServiceThe most comprehensive stock range; the highest investment in processing equipment; local service centres nationwide; helpful, friendly, knowledgeable staff and the industry’s biggest fleet of delivery vehicles – it all adds up to unbeatable service.

Aalco has maintained market leadership over many years through an absolute dedication to customer service – a service level that is continuously monitored and improved through key performance indicators.

That’s why, for reliable, on-time delivery of exactly what you want, when and where you need it, whether it’s a small one-off item or a complex JIT contract, Aalco is the essential first choice.

PeopleExceptional customer service starts with people. Aalco develops and retains high quality personnel using a variety of ‘in house’ courses which cover both skills training, product knowledge and teamwork.

Every Aalco service centre has a dedicated team of people working together to provide an unbeatable service to customers in their region. Customers can expect to receive a quick and informed response to any enquiries for material or for information.

QualityAalco takes great care when selecting manufacturing sources for its products and every mill we use is measured against a series of predetermined quality control requirements. All products supplied by Aalco conform to the relevant BS or international standards. Certification can be supplied on request.

Aalco service centres operate a quality manual designed to ISO9001/2008 requirements. Many vendor approvals and bespoke quality control systems are operated through individual Aalco service centres.

Aalco is the UK’s largest independent multi-metals stockholder. Customers from every sector of the UK manufacturing and engineering industries, whether small local businesses or large multinational corporations, benefit from a cost-effective single source for all their metals requirements.

Stock Range

3

TubeSeamless to ASTM A269, imperial sizes from 1/8˝ O/D x 24swg to 4˝ O/D x 1/4˝ wall in grade 316L

Seamless to ASTM A269, grades 304L & 316L, in metric sizes 6mm O/D x 0.5mm wall to 38mm O/D x 4mm wall

Decorative – Round, Square, Rectangular

Structural – Square and Rectangular up to 250mm

Hygienic (see below)

Welded Metric Nominal Internal Diameter (see below)

PipeSeamless and Welded to ASTM A312 from 1/8˝ to 24˝ in grades 304L & 316L

FlangesASTM A182 / ANSI B16.5

BS 10 Table E, Grade 316L

BS 4504 / EN 1092 Raised Face, 16 Bar

Backing Flanges in Aluminium and Coated Mild Steel

FittingsButt Weld Fittings, Seamless and Welded, to ASTM A403 in grades 304L & 316L including elbows, tees & reducers

BSP Screwed Fittings, grade 316 from 1/8˝ to 3˝

Hygienic fittings (see below)

Welded Metric Nominal Internal Diameter (see below)

Hygienic Tube and FittingsGrades 304L & 316L 3/4˝ O/D to 4˝ O/D:

Tube – As Welded & Descaled, Annealed & Polished or Bright Annealed

Bends, Fitted Bends, Tees, Reducers, Clamps & Tube Hangers

Unions – RJT, IDF & DIN

Metric – Welded Nominal Internal Diameter (ND)From 18mm O/D x 1.5mm wall to 910mm O/D x 5mm wall

Grades 1.4432 (316L High Molybdenum) & 1.4307 (304L)

Tube, Elbows, Tees, Reducers, Collars, End Caps, Tube Clamps & Clips

Backing Flanges in Aluminium & Coated Mild Steel

Further information is provided by these publications, available either from your local Service Centre or at www.aalco.co.uk

Product GuideTechnical information on applications, uses and specifications for stainless

steel, aluminium, copper, brass and bronze.

StocklistA guide to the Aalco standard stock range

in stainless steel, aluminium, copper, brass and bronze.

MetricA guide to the range of light-walled nominal diameter metric stainless steel tubular products used

in water treatment, pulp & paper and other industries.

HandrailA guide to the Aalco range of stainless steel handrail/balustrade systems

comprising tube and slotted tube plus associated fittings.

6-1

Stainless Steel Hygienics is the name given to a range of tube and fittings used in applications requiring a clean and sanitary flow of liquids and where it is essential to avoid contamination of the products being carried. These applications cover the food processing, beverage, biotech and pharmaceutical industries including breweries and dairies.

The applications are low pressure with a maximum of 150lbs.

The products are available in grades 304L and-316L.

The size range is from 1/2 inch to 4 inch O/D.

The tube and fittings are of welded construction with the internal bead rolled to flatten it and eliminate crevices, thus preventing interruptions to the flow and eliminating the risk of contamination or bug traps as well as facilitate easy cleaning.

The tube and fittings are offered with a choice of external finishes:

• Descaled

• Bright Annealed

• Dull Polished

• Semi-Bright or Bright Polished.

Manufacturing standards Hygienic tubes are manufactured to ASTM A270, DIN 11850, ISO 2037 and BS 4825 Part 1.

Hygienic fittings are manufactured to BS 4825 Parts 2 to 5.

Markings on tube and fittingsTube and fittings with a bright annealed or polished finish will be unmarked.

Range/Sizes - Tube

Sizes to ASTM A270

O/D Wall Weight

in swg mm kg/m3/4 16 1.63 0.70

1 16 1.63 0.99

11/2 16 1.63 1.51

2 16 1.63 1.88

21/2 16 1.63 2.49

3 16 1.63 3.01

4 16 1.63 4.03

4 14 2.03 4.98

Sizes to DIN 11850

O/D Wall Weight

in mm kg/m

1 1.5 0.90

11/2 1.5 1.38

2 1.5 1.85

21/2 1.5 2.34

3 1.5 2.81

4 2.0 5.02

HygienicsIntroduction/Tube Range

Hyg

ien

ics

– In

trod

uctio

n/T

ube

Ran

ge

6-2

HygienicsHygienic Bends and Tees - BS 4825 : Part 2

Hyg

ien

ics

– H

ygie

nic

Ben

ds

and

Tee

s -

BS

482

5 : P

art

2

There are two types of bends and tees available, the Short type and Long type. For bends, the Short type simply comprises a 90° bend, while the Long type has a straight leg added at both ends. Tees have equivalent dimensions making them interchangeable. The straight leg of long type bends and tees was originally added to enable expanded type clamp and union parts to be fitted, but they are now widely used in all-welded installations.

Bend radius = 1.5 OD approx

Alignment Tolerances

Dimensions and tolerances

OD Short Type Long Type Max Deviation

A B C A B C D Emm mm mm mm mm mm mm mm mm

12.7 - - - 45 25 1.2 0.1 0.2

15.88 - - - 55 25 1.2 0.2 0.4

19.05 - - - 60 25 1.2 0.2 0.4

25.4 43.5 25 1.6 65 25 1.6 (or 1.21) 0.25 0.5

38.1 63.5 25 1.6 85 25 1.6 (or 1.21) 0.3 0.6

50.8 88.5 30 1.6 110 30 1.6 (or 1.21) 0.4 0.8

63.5 113.5 35 1.6 135 35 1.6 0.5 1.0

76.2 133.5 38 1.6 155 38 1.6 0.5 1.0

101.6 173.5 38 2.0 195 38 2.0 0.7 1.4

Notes1 The 1.2mm wall thickness is for use with expanded fittings.

Length tolerances. +0.5mm, -0mm.

6-3

Clamp fittings provide a crevice free joint and, depending on the clamp design, requires no tools for assembly or dismantling for cleaning. Provides quick method of regularly opening up a system and often has some kind of closure device such as a ‘Triclover’ clamp. Used where corrosion and contamination are particular hazards, as in the pharmaceutical industry. Also used in systems carrying warm semi-solids and viscous liquids, such as chocolate and tomato sauce, which must not cool in the line but tend to cause regular blockages.

Clamp fittings comprise four parts – two welding ferrules, a seal ring and a clamp. The ends of the tubes and/or fittings to be joined have a welding ferrule fitted by welding (or expansion on to expanded type parts if used). The joint is made by positioning the welding ferrules together, with a seal inserted between the faces, and then clamping the ferrules together. The clamp is not in contact with the contents of the pipe and may be made of any suitable material.

Assembly

Typical Clamp

HygienicsClamp Fittings - BS 4825 : Part 3

Hyg

ien

ics

– C

lam

p F

ittin

gs -

BS

482

5 : P

art

3

6-4

Welding ferrule

OD A B C D E Fmm mm mm mm mm mm mm

25.4 22.2 25.65 50.5 43.5 21.5 2.85

38.1 34.9 38.35 50.5 43.5 21.5 2.85

50.8 47.6 51.05 64.0 56.5 21.5 2.85

63.5 60.3 63.75 77.5 70.5 21.5 2.85

76.2 73.0 76.45 91.0 83.5 21.5 2.85

101.6 97.6 101.85 119.0 110.0 21.5 2.85

SealsTwo types of seal are defined in BS 4825, the first for use when a joint is to be frequently disconnected and the second for use in less frequently disconnected joints. The dimensions of both types are given below:

OD A B Cmm mm mm mm

25.4 22.8 43.5 50.5

38.1 35.5 43.5 50.5

50.8 48.2 56.5 64.0

63.5 60.5 70.5 77.5

76.2 73.2 83.5 91.0

101.6 97.8 110.0 119.0

HygienicsClamp Fittings - BS 4825 : Part 3

Hyg

ien

ics

– C

lam

p F

ittin

gs -

BS

482

5 : P

art

3

6-5

The International Dairy Federation, IDF, coupling provides a crevice free joint originally designed for applications where frequent dismantling for cleaning would not be necessary. They may be operated at pressures up to 1.6 MPa.

The Liner is machined and the Nitrile or EPDM Seal is a square section and is more substantial than the RJT. The IDF Union also has a thicker Nut than the RJT. It is machined rather than pressed and is considered easier to use.

Compared to the RJT, the IDF has a smoother and cleaner flow line that is free of crevices and bug traps. It is used where CIP (Clean In Place) systems prevail, with the RJT only tending to be used where very regular access is needed.

IDF type couplings comprise four parts – a male part, a liner, a seal ring and a hexagonal or round nut. The ends of the tubes and/or fittings to be joined have a male part and liner fitted by welding (or expansion on to expanded type parts if used). The joint is made by positioning the male part and the liner together, with a seal inserted between. The nut is then slipped over the liner, screwed on to the male part and tightened against the liner to compress the seal.

BS 4825 : Part 3 requirements for IDF union parts follow.

Assembly

The illustration above shows the assembly of an IDF union with welded parts. Options:

Expanded IDF expanded type union parts are available.

Round nuts. True IDF round nuts have no slots on their circumference, making them tamper proof, but necessitating the use of a special spanner.

HygienicsIDF Unions - BS 4825 : Part 4

Hyg

ien

ics

– ID

F U

nion

s -

BS

482

5 : P

art

4

6-6

Welding male part (threaded)

Notes- An ACME form thread is used.

OD A B C D E Fmm mm mm mm mm mm mm

25.4 25.65 22.2 29.2 21.5 13.5 3.0

38.1 38.35 34.9 42.7 21.5 13.5 3.0

50.8 51.05 47.6 56.2 21.5 13.5 3.0

63.5 63.75 60.3 69.9 21.5 13.5 3.0

76.2 76.45 73.0 82.6 21.5 13.5 3.0

101.6 101.85 97.6 111.1 30.0 16.0 3.2

Welding liner

OD A B C D E F Gmm mm mm mm mm mm mm mm

25.4 22.2 25.65 33.8 29.2 21.5 4.0 3.0

38.1 34.9 38.35 47.0 42.7 21.5 4.0 3.0

50.8 47.6 51.05 60.5 56.2 21.5 4.0 3.0

63.5 60.3 63.75 74.0 69.9 21.5 4.0 3.0

76.2 73.0 76.45 87.5 82.6 21.5 4.0 3.0

101.6 97.6 101.85 120.6 111.1 30.0 4.75 3.2

HygienicsIDF Unions - BS 4825 : Part 4

Hyg

ien

ics

– ID

F U

nion

s -

BS

482

5 : P

art

4

6-7

Hexagonal nut

Notes- An ACME form thread is used.- A round nut may be specified.

OD A B C D E Fmm mm mm mm mm mm mm

25.4 30.5 34.34 30 16 3.5 46

38.1 43.5 47.86 30 16 3.5 60

50.8 57.0 61.37 30 16 3.5 75

63.5 70.7 74.88 30 16 3.5 90

76.2 83.3 88.40 30 16 3.5 105

101.6 112.0 122.00 35 20 4.7 133

Seals

OD A B C F G Hmm mm mm mm mm mm mm

25.4 23.2 29.2 32.5 7.0 6.0 3.0

38.1 35.9 42.7 46.0 7.0 6.0 3.0

50.8 48.6 56.2 59.5 7.0 6.0 3.0

63.5 61.3 69.9 73.2 7.0 6.0 3.0

76.2 74.0 82.6 86.5 7.0 6.0 3.0

101.6 98.6 111.0 119.0 9.6 6.0 5.0

Hyg

ien

ics

– ID

F U

nion

s -

BS

482

5 : P

art

4HygienicsIDF Unions - BS 4825 : Part 4

HygienicsRJT Unions - BS 4825 : Part 5

6-8

Hyg

ien

ics

– R

JT U

nion

s -

BS

482

5 : P

art

5

Ring Joint Type, RJT, unions are easily assembled and dismantled for cleaning purposes, this being a result of their having a Whitworth form thread. The RJT joint is not crevice free and may accumulate a deposit of the product being passed. However, present day cleaning systems are able to sanitise this area successfully without dismantling in the majority of applications. RJT unions may be operated at pressures up to 1.0 MPa.

RJT type couplings comprise four parts – a male part, a liner, an O-ring seal and a hexagonal nut. The ends of the tubes and/or fittings to be joined have a male part and liner fitted by welding (or expansion on to expanded type parts if used). The joint is made by positioning the male part and the liner together, with a seal inserted between. The nut is then slipped over the liner, screwed on to the male part and tightened against the liner to compress the seal.

BS 4825: Part 5 requirements for RJT union parts follow. Additional RJT components are also available (see page 6-11).

Assembly

The illustration above shows the assembly of an RJT union with welded parts. Options:

Expanded RJT expanded type union parts are available.

HygienicsRJT Unions - BS 4825 : Part 5

6-9

Hyg

ien

ics

– R

JT U

nion

s -

BS

482

5 : P

art

5 Welding male part (threaded)

OD A B C D E F Gmm mm mm mm mm mm mm mm

25.4 25.65 22.2 25.4 33.3 14.3 21.5 4.8

38.1 38.35 34.9 38.1 46.0 14.3 21.5 4.8

50.8 51.05 47.6 50.8 58.7 14.3 21.5 4.8

63.5 63.75 60.3 63.5 71.4 14.3 21.5 4.8

76.2 76.45 73.0 76.2 84.1 14.3 21.5 4.8

101.6 101.85 97.6 101.6 109.5 14.3 21.5 4.8

Welding liner

OD A B C D E F Gmm mm mm mm mm mm mm mm

25.4 32.5 25.65 22.2 26.2 27.8 41.3 10 or 12.7

38.1 45.2 38.35 34.9 38.9 40.5 54.0 10 or 12.7

50.8 57.9 51.05 47.6 51.6 53.2 66.7 10 or 12.7

63.5 70.6 63.75 60.3 64.3 65.9 79.4 10 or 12.7

76.2 83.3 76.45 73.0 77.0 78.6 92.1 10 or 12.7

101.6 108.5 101.85 97.6 102.4 104 117.5 12.7 or 25.4

HygienicsRJT Unions - BS 4825 : Part 5

6-10

Hyg

ien

ics

– R

JT U

nion

s -

BS

482

5 : P

art

5Hexagonal nut

OD A B C D E Fmm mm mm mm mm mm mm

25.4 33.3 46.6 22.2 15.1 4.0 50.8

38.1 46.0 59.3 22.2 15.1 4.0 65.0

50.8 58.7 73.6 22.2 15.1 4.0 79.4

63.5 71.4 86.3 22.2 15.1 4.0 92.1

76.2 84.1 99.0 22.2 15.1 4.0 104.8

101.6 109.5 124.4 22.2 15.1 4.0 130.2

Ring joint seals

OD A Bmm mm mm

25.4 33.3 6.6

38.1 46.0 6.6

50.8 58.7 6.6

63.5 71.4 6.6

76.2 84.1 6.6

101.6 109.5 6.6

6-11

This subsection covers additional fittings and components that are compatible with the BS 4825 tube and fittings specifications.

Pulled tees

OD A Bmm mm mm

25.4 2 89

38.1 2 130

50.8 3 178

63.5 3 229

76.2 3 267

101.06 5 348

Reducing tees

OD A B Cmm mm mm mm

38.1 to 25.4 38 25.4 70

50.8 to 25.4 51 25.4 82

50.8 to 38.1 51 38.1 82

63.5 to 38.1 63.5 38.1 105

63.5 to 50.8 63.5 50.8 105

76.2 to 50.8 76 50.8 110

76.2 to 63.5 76 63.5 110

HygienicsAdditional Hygienic Fittings and Components

Hyg

ien

ics

– A

dd

ition

al H

ygie

nic

Fitt

ings

and

Com

pon

ents

6-12

Concentric and eccentric reducers

OD Availability

mm Eccentric Concentric

38.1 to 25.4 3 3

50.8 to 38.1 3 3

50.8 to 25.4 3 3

63.5 to 50.8 3 3

Eccentric reducer 63.5 to 38.1 3 3

63.5 to 25.4 3 -

76.2 to 63.5 3 -

76.2 to 50.8 3 3

76.2 to 38.1 3 3

76.2 to 25.4 3 3

Concentric reducer 101.6 to 76.2 3 3

101.6 to 63.5 3 -

Notes- Dimensions are subject to agreement with purchaser

Hinged pipe clipTwo piece hinged pipe clip tightened by an M8 knurled thumb nut and having a BSP threaded boss

OD A Bin mm m

A

B

32mm

1/2 12.7 403/4 19.0 40

1 25.4 45

11/2 38.1 50

2 50.8 60

21/2 63.2 65

3 76.2 70

4 101.6 80

Notes- Dimensions are subject to agreement with purchaser

HygienicsAdditional Hygienic Fittings and Components

Hyg

ien

ics

– A

dd

ition

al H

ygie

nic

Fitt

ings

and

Com

pon

ents

6-13

Seamless and welded austenitic stainless steel sanitary (hygienic) tubingThis specification covers seamless and welded austenitic stainless steel hygienic tubing having special surface finishes.

Dimensions and tolerances Dimensions. Tube sizes normally furnished to this specification are 2 to 3 >50.8 to 76.2 0.010 0.25 0.010 0.25 12.5 12.5

>3 to 4 >76.2 to 101.6 0.015 0.38 0.015 0.38 12.5 12.5

Notes1 For t

AALCO is a registered trademark of Aalco Metals Ltd Des

ign

ed a

nd

pro

du

ced

by

Squ

aref

ox

Des

ign

Lim

ited

ww

w.s

qu

aref

ox.

co.u

k

r

ABERDEENTel 01224 854810Fax 01224 871982 e-mail aberdeen@aalco.co.uk

AYLESBURYTel 01296 461700Fax 01296 339923e-mail aylesbury@aalco.co.uk

BELFASTTel 02890 838 838Fax 02890 837 837e-mail belfast@aalco.co.uk

BIRMINGHAMTel 0121 585 3600Fax 0121 585 6864e-mail birmingham@aalco.co.uk

CHEPSTOWTel 01291 638 638Fax 01291 638 600e-mail chepstow@aalco.co.uk

DYFEDTel 01269 842044Fax 01269 845276e-mail dyfed@aalco.co.uk

ESSEXTel 01268 884200Fax 01268 884220e-mail essex@aalco.co.uk

GLASGOWTel 0141 646 3200Fax 0141 646 3260e-mail glasgow@aalco.co.uk

HULLTel 01482 626262Fax 01482 626263e-mail hull@aalco.co.uk

LEEDSTel 0113 276 3300Fax 0113 276 0382e-mail leeds@aalco.co.uk

LIVERPOOLTel 0151 207 3551Fax 0151 207 2657e-mail liverpool@aalco.co.uk

MANCHESTERTel 01204 863456Fax 01204 863430e-mail manchester@aalco.co.uk

NEWCASTLETel 0191 491 1133Fax 0191 491 1177e-mail newcastle@aalco.co.uk

NORWICHTel 01603 787878Fax 01603 789999e-mail norwich@aalco.co.uk

NOTTINGHAMTel 0115 988 2600Fax 0115 988 2636e-mail nottingham@aalco.co.uk

SOUTHAMPTONTel 023 8087 5200Fax 023 8087 5275e-mail southampton@aalco.co.uk

STOKETel 01782 375700Fax 01782 375701e-mail stoke@aalco.co.uk

SWANLEYTel 01322 610900Fax 01322 610910e-mail swanley@aalco.co.uk

www.aalco.co.uk

DUBLINTel +353 1 6298 600 Fax +353 1 6299 200 e-mail: dublin@amari-dublin.com

Also available in Ireland

CORKTel +353 21 4310 520 Fax +353 21 4310 519 e-mail: cork@amari-cork.com